Examine the designs given in the Problems to Discuss. Use a centimeter ruler to measure the distances in the problems, and a protractor to measure the angles, as directed. Suppose Mrs. Moon begins to build the sandboxes in which a polygon could not have been the result of an isometric transformation. Refer to the diagram to see where she puts the stakes in the ground at each labeled vertex. She then decides that she wants the sandboxes to be congruent after all. She wants to make as few changes as possible as she builds the sandboxes. Which stake or stakes would you tell Mrs. Moon to relocate? Explain your reasoning.